i don't think it matters too much. we don't want to take it right after you just exercised obviously, but even taking it once is indicative of things. 'i have white coat etc. i have nerves!' these are all things we don't mind seeing. all those those things connect.

using up time to double check blood pressure is so/so useful but generally a waste. a patient's labs tell much more, and are better to hedge suspicions against.

white coat hypertension at 320lbs!? alright sir we can check again if you like...